Curved line used in musical notation to group together notes. Most common indication is that notes concerned are to be played or sung smoothly (legato). For a str.‐player, this signifies that the notes should be taken in one stroke of the bow, for a wind‐player or singer that they should be taken in one breath. If notes within slur have dots above or below, this means they are to be played slightly detached. Slur also used in vocal mus. to indicate that one syllable is to be sung to several notes. See also tie and curved lines.